CN216321120U - A device for catalytic degradation of organic waste gas - Google Patents

Abstract

The utility model discloses a catalytic degradation device for organic waste gas, and belongs to the field of waste gas purification. The ultraviolet lamp comprises a box body, a base plate, a filtering sleeve, an ultraviolet lamp tube and an infrared lamp tube; the two sides of the box body are respectively provided with an air inlet end and an air outlet end, the substrate is arranged on one side of the box body close to the air inlet end, and the filtering sleeve, the ultraviolet lamp tube and the infrared lamp tube are fixedly arranged on the substrate; the wall surface of the filtering sleeve is covered with a catalyst and is provided with filtering holes for the exhaust gas to pass through. The utility model can complete the catalytic degradation of organic waste, simultaneously avoid the accumulation of intermediate products on the surface of the catalyst, and effectively improve the catalytic efficiency of the device.

Description

A catalytic degradation device for organic waste gas

technical field

The utility model belongs to the field of waste gas purification, and more particularly relates to a catalytic degradation device for organic waste gas.

Background technique

With the rapid development of my country's economic level, the consumption of energy has gradually increased, which has led to the production of industrial production and daily life, such as petroleum, chemical, painting, printing, shoemaking, wood industry, transportation, interior decoration and other activities. a lot of volatile organic pollutants. At present, zeolite runner adsorption concentration + catalytic combustion, activated carbon adsorption concentration + catalytic oxidation, and low temperature plasma technology are mainly used in the treatment of large flow and low concentration of organic waste gas. Although the first two types of technologies have high efficiency, the initial investment and maintenance costs are high, which is unacceptable to ordinary small enterprises. However, the low temperature plasma technology has problems such as dangerous operation and low efficiency, which makes it unable to be widely used.

Therefore, it is of great significance to research and develop a continuous, high-efficiency, low-concentration organic waste gas purification and treatment device with low investment and maintenance costs.

The Chinese patent application number is: CN201420397256.6, and the publication date is: the patent document on December 10, 2014, which discloses a movable photocatalytic air purifier. The car body is provided with a purifier outer casing, and the purifier outer casing The outer casing of the purifier is a rectangular parallelepiped. A fan, an ultraviolet lamp and a photocatalyst filter screen are arranged in the outer casing of the purifier in sequence from left to right. The ultraviolet lamp is connected to the outer casing of the purifier through a fixing seat. The upper part is provided with an air inlet, the top left end of the outer casing of the purifier is provided with an air outlet, and the outer side of the vehicle body is provided with an annular bumper.

The Chinese patent application number is: CN201921131815.8, the publication date is: the patent document on April 17, 2020, which discloses a photo-oxygen catalytic waste gas treatment tower, including: a tower body, which is provided on one side of the lower end of the tower body There is a waste gas inlet, a clean air outlet is arranged at the upper end of the tower body, an ozone filter layer is arranged in the tower body at the upper end of the waste gas inlet, and a number of photo-oxygen catalytic devices are arranged in the tower body at the upper end of the ozone filter layer, The structure of the photo-oxygen catalysis device includes: several rows of photo-oxygen catalysis lighting units evenly distributed and a photo-catalyst catalyst layer respectively arranged between two adjacent rows of photo-oxygen catalysis lighting units, and the structure of the photo-oxygen catalysis lighting unit includes: : Several large FRP pipes are evenly arranged in the tower body, small FRP pipes are symmetrically arranged on both sides of the large FRP pipes, and one end of the large FRP pipes and the small FRP pipes are respectively enclosed in the tower body.

The above two schemes are exhaust gas purification devices, and both of them are used in combination with adsorption and photocatalysis. However, in the process of adsorption and catalytic degradation of organic waste gas, macromolecular organic compounds will produce some intermediates with higher melting points during oxidative degradation. The product, this part of the intermediate product is difficult to be degraded by the catalyst and the ultraviolet lamp irradiation, and it is easy to accumulate on the surface of the catalyst of the filter screen or filter layer, causing the catalyst to deactivate and reducing the exhaust gas purification effect of the device. Therefore, it is necessary to replace the filter screen or filter layer frequently. On the one hand, the replacement takes time, which affects the catalytic efficiency, and on the other hand, it also increases the maintenance cost of the device.

SUMMARY OF THE INVENTION

1. The problem to be solved

Aiming at the problem that intermediate products are easy to accumulate on the catalyst surface and cause catalyst deactivation when the existing waste gas purification device performs catalytic degradation of organic waste gas, the utility model provides a catalytic degradation device for organic waste gas, which can complete the catalytic degradation of organic waste gas. At the same time of degradation, the accumulation of intermediate products on the catalyst surface is avoided, and the catalytic efficiency of the device is effectively improved.

2. Technical solutions

In order to solve the above problems, the present invention adopts the following technical solutions.

An organic waste gas catalytic degradation device, comprising a box body, a substrate, a filter sleeve, an ultraviolet lamp and an infrared lamp; the two sides of the box are respectively provided with an air inlet end and an air outlet, and the substrate is installed on the box body On the side close to the intake end, the filter sleeve, the ultraviolet lamp tube and the infrared lamp tube are all fixedly mounted on the base plate; the wall surface of the filter sleeve is covered with catalyst and has filter holes for the exhaust gas to pass through.

As a further improvement of the technical solution, the base plate has mounting holes for installing the filter sleeve, the ultraviolet lamp tube and the infrared lamp tube respectively, and the ends of the base plate, the filter sleeve, the ultraviolet lamp tube and the infrared lamp tube are connected with The mounting holes are fixedly connected.

As a further improvement of the technical solution, the filter sleeve includes a support frame and an adsorption filter screen, the support frame is fixedly installed on the base plate, and the adsorption filter screen is arranged on the support frame and covers the catalyst surface.

As a further improvement of the technical solution, it also includes a fixing frame; the fixing frame is fixedly installed on the side of the box body close to the gas outlet, and the end of the infrared lamp tube close to the fixing frame is installed on the fixing frame.

As a further improvement of the technical solution, the fixing frame is provided with a groove into which the end of the infrared lamp tube extends.

As a further improvement of the technical solution, the intake end gradually decreases along the direction from the box body to the intake port.

As a further improvement of the technical solution, the diameter of the air outlet along the direction from the box body to the air outlet gradually decreases.

As a further improvement of the technical solution, there are multiple filter sleeves, ultraviolet lamps and infrared lamps, and they are arranged in a cross on the substrate.

As a further improvement of the technical solution, the outer cover of the ultraviolet lamp tube and the infrared lamp tube is provided with a protective cover.

3. Beneficial effects

Compared with the prior art, the beneficial effects of the present utility model are:

(1) The utility model is an organic waste gas catalytic degradation device. By arranging a filter sleeve, an ultraviolet lamp tube and an infrared lamp tube on the substrate in the box, the exhaust gas passes through the filter sleeve from the air inlet end, and then is discharged from the air outlet end, The organic molecules in the exhaust gas are adsorbed to the surface of the filter sleeve, and the ultraviolet light of the ultraviolet lamp decomposes the water molecules in the exhaust gas to form strong oxidizing hydroxyl radicals, and the hydroxyl radicals are used to degrade the organic molecules into H ₂ O and CO ₂ , on the other hand, when ultraviolet light is irradiated on the surface of the catalyst, the decomposition of H ₂ O is accelerated and the organic molecules can also be directly oxidized on the surface of the catalyst, and the irradiation temperature of the infrared lamp can reach 120 Above ℃, the intermediate products with higher melting point accumulated on the surface of the filter sleeve can be volatilized, and the phenomenon of catalyst deactivation on the surface of the filter sleeve and clogging of filter holes caused by the accumulation of intermediate products can be avoided. The upper end of the box is closed, so that the exhaust gas from the intake end must enter the box from the filter sleeve, which effectively improves the purification effect of the exhaust gas;

(2) The utility model is an organic waste gas catalytic degradation device. The weight of the infrared lamp is generally heavier. By setting the fixing frame, the infrared lamp can be supported to prevent the connection between the infrared lamp and the substrate from loosening, ensuring that the The stability of the installation structure of the device is improved;

(3) An organic waste gas catalytic degradation device of the present invention, the inlet end and the outlet end are both constricted structures, which increases the fluidity of the waste gas in the device;

(4) The utility model is a catalytic degradation device for organic waste gas. The outer cover of the ultraviolet lamp and the infrared lamp is provided with a protective cover, which can improve the service life of the ultraviolet lamp and the infrared lamp.

Description of drawings

Fig. 1 is the external structure schematic diagram of the utility model;

Fig. 2 is the internal structure schematic diagram of the utility model;

FIG. 3 is a schematic diagram of the installation structure of the infrared lamp tube and the fixing frame;

4 is a cross-sectional view of a filter sleeve;

In the figure: 1. Box body; 2. Inlet end; 3. Air outlet; 4. Base plate; 41. Installation hole for filter sleeve; 42. Installation hole for ultraviolet lamp; Sleeve; 51. Supporting frame; 52. Adsorption filter; 6. Ultraviolet lamp; 7. Infrared lamp; 8. Fixing frame.

Detailed ways

The present utility model will be further described below with reference to specific embodiments and accompanying drawings.

Example

An organic waste gas catalytic degradation device is mainly used for purifying organic waste gas, and makes the waste gas meet the emission standard by means of adsorption and catalytic degradation. The specific structure and working principle of the device are described in detail below.

As shown in FIGS. 1 to 3 , the device mainly includes a box 1 , a substrate 4 , a filter sleeve 5 , an ultraviolet lamp 6 and an infrared lamp 7 . Wherein, the two sides of the box body 1 are respectively provided with an air inlet end 2 and an air outlet end 3 . The base plate 4 is installed on the side of the box body 1 close to the air inlet 2, the filter sleeve 5, the ultraviolet lamp 6 and the infrared lamp 7 are all fixedly installed on the base plate 4, and the wall surface of the filter sleeve 5 is covered with catalyst and has Filter hole for exhaust gas to pass through.

Specifically, the substrate 4 is provided with a filter sleeve installation hole 41 for installing the filter sleeve 5 , an ultraviolet lamp tube 6 installation hole 42 for installing the ultraviolet lamp tube 6 , and an infrared lamp tube 7 for installing the infrared lamp tube 7 . Mounting hole 43. The ends of the ultraviolet lamp tube 6 and the infrared lamp tube 7 are respectively fixedly connected to the mounting holes and are in a sealed structure. As shown in FIG. 4 , the filter sleeve 5 includes a support frame 51 and an adsorption filter screen 52 . The support frame 51 is fixedly mounted on the base plate 4 and the ends are fixedly connected to the filter sleeve installation holes 41 , and the adsorption filter screen 52 is arranged on the support frame 51 . and the surface is covered with catalyst.

When the device is working, the exhaust gas passes through the filter sleeve 5 from the intake end 2 and then is discharged from the exhaust end 3 , and the organic molecules in the exhaust gas are adsorbed to the surface of the filter sleeve 5 . On the one hand, the ultraviolet light of the ultraviolet lamp 6 decomposes the water molecules in the exhaust gas to form hydroxyl radicals with strong oxidizing properties, and uses the hydroxyl radicals to degrade the organic molecules into H ₂ O and CO ₂ . On the other hand, the ultraviolet light irradiation To the surface of the catalyst, organic molecules can also be directly oxidized on the surface of the catalyst while accelerating the decomposition of H ₂ O. The ray irradiation temperature of the infrared lamp 7 can reach above 120°C, which can volatilize the intermediate products with higher melting points accumulated on the surface of the filter sleeve 5, and avoid the catalyst deactivation on the surface of the filter sleeve 5 caused by the accumulation of intermediate products. and clogging of filter holes. In particular, by arranging the base plate 4 to seal the upper end of the box body 1, the exhaust gas from the intake end 2 must enter the box body 2 from the filter sleeve 5, which effectively improves the purification effect of the exhaust gas.

It is worth mentioning that since the weight of the infrared lamp 7 is generally heavier, it is easy to loosen from the base plate 4 under long-term working conditions. Therefore, in this embodiment, a fixing frame 8 is installed on the side of the box body 1 close to the gas outlet 3, and the infrared The end of the lamp tube 7 close to the fixing frame 8 is mounted on the fixing frame 8 . In order to facilitate the installation of the infrared lamp tube 7 , in this embodiment, the fixing frame 8 is provided with a groove for the end of the infrared lamp tube 7 to extend into.

In addition, in order to improve the fluidity of the exhaust gas in the device, the inlet end 2 of this embodiment gradually decreases along the direction from the box body 1 to the air inlet port, and the diameter of the outlet end 3 also decreases gradually along the direction from the box body 1 to the air outlet port. .

In order to improve the catalytic degradation effect, there are multiple filter sleeves 5 , ultraviolet lamps 6 and infrared lamps 7 in this embodiment, and they are arranged on the substrate 4 in a cross manner. In order to improve the service life of the ultraviolet lamp 6 and the infrared lamp 7 , in this embodiment, a protective cover is provided on the outer side of the ultraviolet lamp 6 and the infrared lamp 7 .

To sum up, the device for catalytic degradation of organic waste gas in this embodiment can complete the catalytic degradation of organic waste while avoiding the accumulation of intermediate products on the surface of the catalyst, thereby effectively improving the catalytic efficiency of the device.

The present invention and its embodiments have been schematically described above, and the description is not restrictive, and what is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it, without departing from the purpose of creation of the present utility model, without creative design of the structural mode and embodiment similar to the technical solution, all should belong to the present utility model. protected range.

Claims (9)

1. An organic waste gas catalytic degradation device, comprising a case (1), the two sides of the case (1) are respectively equipped with an air inlet (2) and an air outlet (3), it is characterized in that: also comprise a substrate (4), a filter sleeve (5), an ultraviolet lamp (6) and an infrared lamp (7); the base plate (4) is installed on the side of the box (1) close to the air inlet (2), so The filter sleeve (5), the ultraviolet lamp tube (6) and the infrared lamp tube (7) are all fixedly mounted on the base plate (4); filtered hole. 2 . The device for catalytic degradation of organic waste gas according to claim 1 , wherein the substrate ( 4 ) is provided with a filter sleeve ( 5 ), an ultraviolet lamp tube ( 6 ) and an infrared lamp tube respectively for installing the filter sleeve ( 5 ). 3 . (7) the mounting hole, the ends of the base plate (4), the filter sleeve (5), the ultraviolet lamp (6) and the infrared lamp (7) are fixedly connected with the mounting hole. 3 . The device for catalytic degradation of organic waste gas according to claim 2 , wherein the filter sleeve ( 5 ) comprises a support frame ( 51 ) and an adsorption filter screen ( 52 ), and the support frame ( 51 ) It is fixedly installed on the base plate (4), the adsorption filter screen (52) is arranged on the support frame (51) and the surface is covered with catalyst. 4. A device for catalytic degradation of organic waste gas according to claim 3, characterized in that: it further comprises a fixing frame (8); the fixing frame (8) is fixedly installed on the box body (1) near the gas outlet (3) One side of the infrared lamp tube (7) close to the fixing frame (8) is mounted on the fixing frame (8). 5 . The device for catalytic degradation of organic waste gas according to claim 4 , wherein the fixing frame ( 8 ) is provided with a groove into which the end of the infrared lamp tube ( 7 ) extends. 6 . 6. The device for catalytic degradation of organic waste gas according to any one of claims 1-5, characterized in that: the intake end (2) gradually decreases along the direction from the box body (1) to the intake port. 7 . The device for catalytic degradation of organic waste gas according to claim 1 , wherein the diameter of the gas outlet ( 3 ) gradually decreases along the direction from the box body ( 1 ) to the gas outlet. 8 . 8. The device for catalytic degradation of organic waste gas according to any one of claims 1-5, wherein the filter sleeve (5), the ultraviolet lamp (6) and the infrared lamp (7) are all There are a plurality of them, which are arranged crosswise on the base plate (4). 9 . The device for catalytic degradation of organic waste gas according to any one of claims 1 to 5 , wherein the ultraviolet lamp ( 6 ) and the infrared lamp ( 7 ) are covered with protective sleeves on the outer sides. 10 .

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